mc-engine : Messages : 22334-22363 of 24844

Has anyone had much to do with the Suzuki RGV250 (or Aprilia RS250)?

I've been asked by a (possibly overly cautious) friend about how to check the oil flow

from the pump. Suzuki even made a 'special tool' to do so.

How reliable is the system, my guess is that if it has worked up until now,

that it will probably do so 'forever'.

Roger

#22335

From: Ian <iwd@...>
Date: Sat Mar 31, 2012 11:33 pm
Subject: Re: MotoGP on line, was Feral Bumblebees

iwd@...

>I know,
>I think last year was about 60 euros.
>The only thing is, at least the euro was down..
>Last year it worked out to about $5.00 / race, closer to $7.50 this year.
>Bandits.


Move to Australia, we get the 3 MotoGP classes almost live "free
to air" ( 15 min delay as a concession to the cable companies ),
then again with an hour delay on another "free to air" channel -
then usually repeated the following night.

World Superbikes are cable only though, which wasn't always
the case.

We also get F1, US Nascars, World Rally C'ships, Dakar, I.O.M.
TT etc etc "free to air too", plus local superbikes, sidecars, V8
Supercars ( sorta like Nascars ), drags and even some club racing
on community TV.

Spoiled for choice........


Cheers           IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22336

From: Rick Hammond <r.hammond@...>
Date: Sat Mar 31, 2012 11:44 pm
Subject: Re: MotoGP on line, was Feral Bumblebees

rickincanadia

Yup,
Sad. Also, compared to Europe as I remember.
You get the nascar so I can't even say it's a trade..
On cable we have 'speed', either infomercials or analysis shows covering other analysis shows.. I remember when dead space was filled with 'legends of motorsport'; great old stuff like supercharged straight eights on skinny corded tyres.. real racing ;-)

I watched an F1 race on Canadian TSN and they seem to have found their solution for running adverts;
They go to a split screen with a little wee window for the race, muted, while the ads play, and play..
Problem is, where they might (I say might to be nice..) have looked previously at when to cut in, they seem oblivious to the action now. You get the feed back with no accounting for whatever has gone on..
For that, I don't feel as bad having to pay for a proper feed.

I do pay attention to the ads; to remember who to avoid.
Feh!
Rick

On 31/03/2012 5:33 PM, Ian wrote:

>I know,
>I think last year was about 60 euros.
>The only thing is, at least the euro was down..
>Last year it worked out to about $5.00 / race, closer to $7.50 this year.
>Bandits.

Move to Australia, we get the 3 MotoGP classes almost live "free
to air" ( 15 min delay as a concession to the cable companies ),
then again with an hour delay on another "free to air" channel -
then usually repeated the following night.

World Superbikes are cable only though, which wasn't always
the case.

We also get F1, US Nascars, World Rally C'ships, Dakar, I.O.M.
TT etc etc "free to air too", plus local superbikes, sidecars, V8
Supercars ( sorta like Nascars ), drags and even some club racing
on community TV.

Spoiled for choice........

Cheers IAN

See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22337

From: Bummers <bummers@...>
Date: Sun Apr 1, 2012 12:11 am
Subject: Re: MotoGP on line, was Feral Bumblebees

bernthegurn

Why is that? - We can buy MotoGP from Dorna but can't buy WSB online.
And I never seem to be able to find a live feed, elsewhere. :'(

Bernie

On 01/04/2012 09:33, Ian wrote:

World Superbikes are cable only though, which wasn't always
the case.

Cheers IAN

See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22338

From: hobot <hobot@...>
Date: Sun Apr 1, 2012 2:08 am
Subject: Combat Commando Norton crisis article.

hoboter

All the errors and warrantee work put Norton so behind it never really
caught back up.
Educational on one thing leads to another and another.  To me the Cream
of Norton
crop, once upgraded a good bit.
http://i283.photobucket.com/albums/kk315/HORTONSNORTON/File_Norton_bumph0003.jpg
http://i283.photobucket.com/albums/kk315/HORTONSNORTON/File_Norton_bumph0004.jpg

#22339

From: hobot <hobot@...>
Date: Sun Apr 1, 2012 5:05 am
Subject: Retainer Failure.mp4 - YouTube

hoboter

http://www.youtube.com/watch?v=Iqq-RNDea9U&feature=endscreen&NR=1

#22340

From: hobot <hobot@...>
Date: Mon Apr 2, 2012 4:14 am
Subject: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

hoboter

More ingenuity to take in.

http://www.rexresearch.com/revetec/revetec.htm

#22341

From: "Brent Prindle" <brentp@...>
Date: Mon Apr 2, 2012 4:53 am
Subject: RE: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

brentprindle

Way too much ingenuity to take in.  Especially on the homepage of "rex
research".

Damn.  So much stuff to learn.


-oo
BrentP@...

-----Original Message-----
From: mc-engine@yahoogroups.com [mailto:mc-engine@yahoogroups.com] On Behalf
Of hobot
Sent: Sunday, April 01, 2012 9:15 PM
To: mc-engine@yahoogroups.com
Subject: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

More ingenuity to take in.

http://www.rexresearch.com/revetec/revetec.htm



------------------------------------

Yahoo! Groups Links

#22342

From: Ian <iwd@...>
Date: Mon Apr 2, 2012 6:45 am
Subject: Re: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

iwd@...

><http://www.rexresearch.com/revetec/revetec.htm>http://www.rexresearch.com/reve\
tec/revetec.htm



Constant breadth cams are not new, I've never seen counter-rotating
constant breath cams before but doesn't mean it hasn't been done
before.

Not so much a criticism, but an observation, the point contact load
on the cams will be something that will be a challenge for them.


Cheers           IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22343

From: Rick Hammond <r.hammond@...>
Date: Mon Apr 2, 2012 7:01 am
Subject: Re: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

rickincanadia

If the cams and 'rollers' are offset, isn't there a force trying to rotate the piston in the bore and if so how would it be countered?
Cheers,
Rick

On 02/04/2012 12:45 AM, Ian wrote:

><http://www.rexresearch.com/revetec/revetec.htm>http://www.rexresearch.com/revetec/revetec.htm

Constant breadth cams are not new, I've never seen counter-rotating
constant breath cams before but doesn't mean it hasn't been done
before.

Not so much a criticism, but an observation, the point contact load
on the cams will be something that will be a challenge for them.

Cheers IAN

See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22344

From: Andrew McNally <djhudson@...>
Date: Mon Apr 2, 2012 11:08 am
Subject: Re: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

mcnallya...

�I looked at that web page / engine 4 or more years ago.� Doesn't seem like much has been done since.

#22345

From: hobot <hobot@...>
Date: Mon Apr 2, 2012 3:16 pm
Subject: Re: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

hoboter

You commit throws me back to a mystical-biological incentive a swami
told me.- women are biological set up to create new life but men who
can't express creativity any way they can - even if totally useless or
off the wall stuff. I create messes for instance. hobot

, Brent Prindle wrote:

Way too much ingenuity to take in. Especially on the homepage of "rex
research".

Damn. So much stuff to learn.

http://www.rexresearch.com/revetec/revetec.htm

#22346

From: Jamie Worthington <rsv250r@...>
Date: Mon Apr 2, 2012 5:24 pm
Subject: Re: David HOWELL-SMITH BRADELY -- Revetec Cam-Drive Engine

buck_magee

Punctuation is your friend.

hobot <hobot@...> wrote:

>You commit throws me back to a mystical-biological incentive a swami
>told me.- women are biological set up to create new life but men who
>can't express creativity any way they can - even if totally useless or
>off the wall stuff.  I create messes for instance.  hobot
>
>, Brent Prindle wrote:
>>
>> Way too much ingenuity to take in. Especially on the homepage of "rex
>> research".
>>
>> Damn. So much stuff to learn.
>>
>> http://www.rexresearch.com/revetec/revetec.htm
>>
>

#22347

From: hobot <hobot@...>
Date: Tue Apr 3, 2012 1:56 am
Subject: Flying Car (or Driving Autogyro) Completes First Flight Tests | Popular Science

hoboter

http://www.popsci.com/cars/article/2012-04/video-flying-car-or-driving-autogyro-\
completes-first-flight-tests

#22348

From: hobot <hobot@...>
Date: Tue Apr 3, 2012 6:53 pm
Subject: MJ-Works 250RR �Kid Designs and Builds 250cc Racer

hoboter

http://thekneeslider.com/archives/2011/05/10/mj-works-250rr-designing-and-buildi\
ng-your-own-250cc-racer/

#22349

From: "Michael Moore" <mmoore@...>
Date: Wed Apr 4, 2012 4:16 am
Subject: Laverda V6 rebuild/remanufacturing

mmooreeurosp...

http://www.laverdamuseum.nl/index_uk.html

Take the V6 rebuild link.

Cor Dees is preparing the original V6 racer and building a second
from spares.  But there were lots of parts missing and other parts
were damaged, so he's got a HUGE project of
redesigning/remanufacturing a lot of expensive parts.

There are many interesting photos of engine and gearbox internals,
parts being machined, molds being made, a new fuel tank
constructed, and on and on and on.

They aren't running yet, but it may not be very much longer before
they are finished.

cheers,
Michael

Reply | Messages in this Topic (3)

#22350

From: Ian <iwd@...>
Date: Wed Apr 4, 2012 7:00 am
Subject: Re: Laverda V6 rebuild/remanufacturing

iwd@...

><http://www.laverdamuseum.nl/index_uk.html>http://www.laverdamuseum.nl/index_uk\
.html
>
>Cor Dees is preparing the original V6 racer and building a second
>from spares.


I'm calling in to see him in one week, if you want some specific photos.


Cheers              IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

Reply | Messages in this Topic (3)

#22351

From: "Chris Cosentino" <chris@...>
Date: Wed Apr 4, 2012 3:09 pm
Subject: Re: Laverda V6 rebuild/remanufacturing

ccosentino2001

>>http://www.laverdamuseum.nl/index_uk.html

>>Take the V6 rebuild link.

Wow, that's some nice work. And lots of it.

Chris Cosentino
Cosentino Engineering
812 Jersey Ave. 3rd Floor
Jersey City, NJ 07310
201-392-1400
fax 484-340-1400
www.cosentinoengineering.com

Reply | Messages in this Topic (3)

#22352

From: "tz350g" <bradheiter@...>
Date: Wed Apr 4, 2012 5:13 pm
Subject: Material for transmission shaft

tz350g

I'm sure this has been talked about before but I couldn't find it with the
search function.  What is a good steel to use to make a transmission axle that
has an integral gear? It's for a Yamaha RD400, I want to make one so I can use a
dry clutch from a TZ.  The heat treatment shop recommended 1045 and induction
hardening the gear and other wear areas. Anyone know what Yamaha actually used?
Thanks,
Brad H

#22353

From: Caparo <caparo@...>
Date: Wed Apr 4, 2012 9:56 pm
Subject: Re: Material for transmission shaft

yamaha_george

On Wednesday 04 April 2012 18:13:18 tz350g wrote:
> I'm sure this has been talked about before but I couldn't find it with the
> search function.  What is a good steel to use to make a transmission axle
> that has an integral gear? It's for a Yamaha RD400, I want to make one so I
> can use a dry clutch from a TZ.  The heat treatment shop recommended 1045
> and induction hardening the gear and other wear areas. Anyone know what
> Yamaha actually used? Thanks,
> Brad H
>
Hi,
Graham Dyson of Nova racing makes these he was in Crowland lincolnshire uk.

--
TTFN
    Caparo.

#22354

From: Ian <iwd@...>
Date: Wed Apr 4, 2012 10:59 pm
Subject: Re: Material for transmission shaft

iwd@...

>What is a good steel to use to make a transmission axle that has an
>integral gear? It's for a Yamaha RD400, I want to make one so I can
>use a dry clutch from a TZ. The heat treatment shop recommended 1045
>and induction hardening the gear and other wear areas.


Absolutely not !!

For a highly stressed gear on a high performance bike ( if you're dry
clutching it, I guess it's being souped up as well ), you need a good
quality gear steel case hardened to 58-62 HRC.

I use EN36A or EN39B if I can get it, there are American equivalents.
Any specialist case hardening gear steel will be better than induction
hardened 1045.


Cheers          IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22355

From: John Mead <john.mead@...>
Date: Wed Apr 4, 2012 11:19 pm
Subject: Re: Material for transmission shaft

john_l_mead

I would use 4340 cromo.

John Mead

--- On Wed, 4/4/12, tz350g <bradheiter@...> wrote:

> From: tz350g <bradheiter@...>
> Subject: Material for transmission shaft
> To: mc-engine@yahoogroups.com
> Date: Wednesday, April 4, 2012, 1:13 PM
> I'm sure this has been talked about
> before but I couldn't find it with the search
> function.� What is a good steel to use to make a
> transmission axle that has an integral gear? It's for a
> Yamaha RD400, I want to make one so I can use a dry clutch
> from a TZ.� The heat treatment shop recommended 1045
> and induction hardening the gear and other wear areas.
> Anyone know what Yamaha actually used?
> Thanks,
> Brad H���
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
> � � mc-engine-fullfeatured@yahoogroups.com
>
>

#22356

From: Ian <iwd@...>
Date: Wed Apr 4, 2012 11:28 pm
Subject: Re: Material for transmission shaft

iwd@...

>I would use 4340 cromo.


4340 is not a case hardening steel, it will take a case, like any steel
will, but the specialist casing steels are called that for a reason.

"Hi-case" is one American trade-name case hardening steel, I've
never used it but have heard good reports.



Cheers            IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22357

From: "tz350g" <bradheiter@...>
Date: Thu Apr 5, 2012 5:08 am
Subject: Re: Material for transmission shaft

tz350g

Thanks, I didn't know Nova had them. I found it at
http://www.yamaha-tz-classicracing.de/uk/teile_getriebe.html and at about
$250.00 I'll probably, OK --will-- have more invested in it by making it myself.
I just bought an Abene horizontal/vertical mill (still working on getting it
hooked up and powered up) and want to use it to make the shaft myself.  Always
wanted to make a gear now's my chance.
Brad H
--- In mc-engine@yahoogroups.com, Caparo <caparo@...> wrote:
>
> On Wednesday 04 April 2012 18:13:18 tz350g wrote:
> > I'm sure this has been talked about before but I couldn't find it with the
> > search function.  What is a good steel to use to make a transmission axle
> > that has an integral gear? It's for a Yamaha RD400, I want to make one so I
> > can use a dry clutch from a TZ.  The heat treatment shop recommended 1045
> > and induction hardening the gear and other wear areas. Anyone know what
> > Yamaha actually used? Thanks,
> > Brad H
> >
> Hi,
> Graham Dyson of Nova racing makes these he was in Crowland lincolnshire uk.
>
> --
> TTFN
>    Caparo.
>

#22358

From: "tz350g" <bradheiter@...>
Date: Thu Apr 5, 2012 5:25 am
Subject: Re: Material for transmission shaft

tz350g

--- In mc-engine@yahoogroups.com, "tz350g" <bradheiter@...> wrote:
>
> I'm sure this has been talked about before but I couldn't find it with the
search function.>

Thanks to all who replied. I also found some info starting with message: 15728
titled: Aluminum alloy's cross-ref chart, as that thread goes it ends up talking
about gear steel.

My heat treatment place is concerned that if I use a case hardening steel for
the transmission axle there will be distortion.

Ian in that thread you mention using 4340 and nitriding instead of case
hardening.  Would that be an option here?  Or should I be looking for a heat
treat place that can do it in EN36 (looks to be 3310 in the US) with out
distortion?  8620 looks to be an available case hardening steel here but it
isn't EN36 in the specs I've found.

Brad H

#22359

From: Ian <iwd@...>
Date: Thu Apr 5, 2012 9:06 am
Subject: Re: Material for transmission shaft

iwd@...

>OK --will-- have more invested in it by making it myself. I just
bought an Abene
  >horizontal/vertical mill (still working on getting it hooked up and
powered up)
  >and want to use it to make the shaft myself. Always wanted to make a gear
  >now's my chance.


Commendable idea. but if you are cutting a gear on a mill, I'm assuming
that you will be using a "one tooth at a time" cutter ?   These cutters are
a compromise and I would be hesitant about using it on a gear for a high
speed application.  ( OK for gears for a hand winch for a yacht........ )
You really need to "generate" gears to be used at high rpm.


>My heat treatment place is concerned that if I use a case hardening
>steel for the transmission axle there will be distortion.


It bends, you straighten it......


>Ian in that thread you mention using 4340 and nitriding instead of
>case hardening. Would that be an option here?


I nitride the gear on my 1000-V8 crankshaft, but there are 41 teeth,
You are cutting 1st gear I assume, so 13 or 14T ?   Nitriding will
not stand up to the punishment that 1st gear gets in a high
performance motorcycle.


>Or should I be looking for a heat treat place that can do it in EN36
>(looks to be 3310 in the US) with out distortion?


A good HT shop knows how to "hang" parts so that they get
minimum distortion - but a lot comes down to the material.
EN36A doesn't move much in HT.   Get a piece of mild steel
case hardened and it comes out looking like a banana.

You can also rough machine the shaft out ( +3mm all over ) and
get it stress relieved before final machining.


>  8620 looks to be an available case hardening steel here but it
> isn't EN36 in the specs I've found.


8620 is a specialist forging steel, also with good case hardening
characteristics, it will be a good second to EN36A.


Cheers           IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22360

From: Charles Finney <finneys@...>
Date: Thu Apr 5, 2012 11:05 am
Subject: Re: Material for transmission shaft

bk350mz

8620 was, at one time, the material of choice for the bulk of the gears in Caterpillar transmissions.� I've been out of it too long to know current practice.

Charlie in Iowa

On Thu, Apr 5, 2012 at 4:06 AM, Ian <iwd@...> wrote:

�

>OK --will-- have more invested in it by making it myself. I just
bought an Abene
>horizontal/vertical mill (still working on getting it hooked up and
powered up)
>and want to use it to make the shaft myself. Always wanted to make a gear
>now's my chance.

Commendable idea. but if you are cutting a gear on a mill, I'm assuming
that you will be using a "one tooth at a time" cutter ? These cutters are
a compromise and I would be hesitant about using it on a gear for a high
speed application. ( OK for gears for a hand winch for a yacht........ )
You really need to "generate" gears to be used at high rpm.

>My heat treatment place is concerned that if I use a case hardening
>steel for the transmission axle there will be distortion.

It bends, you straighten it......

>Ian in that thread you mention using 4340 and nitriding instead of
>case hardening. Would that be an option here?

I nitride the gear on my 1000-V8 crankshaft, but there are 41 teeth,
You are cutting 1st gear I assume, so 13 or 14T ? Nitriding will
not stand up to the punishment that 1st gear gets in a high
performance motorcycle.

>Or should I be looking for a heat treat place that can do it in EN36
>(looks to be 3310 in the US) with out distortion?

A good HT shop knows how to "hang" parts so that they get
minimum distortion - but a lot comes down to the material.
EN36A doesn't move much in HT. Get a piece of mild steel
case hardened and it comes out looking like a banana.

You can also rough machine the shaft out ( +3mm all over ) and
get it stress relieved before final machining.

> 8620 looks to be an available case hardening steel here but it
> isn't EN36 in the specs I've found.

8620 is a specialist forging steel, also with good case hardening
characteristics, it will be a good second to EN36A.

Cheers IAN

See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22361

From: "Swiss" <swissscf@...>
Date: Thu Apr 5, 2012 12:05 pm
Subject: RE: Material for transmission shaft

swiss_88310

Ian,

I have a friend that is making some rocker arms from 4340. He intends on Nitriding the surface that contacts the cam. Will that work for wear properties or would it still be better to hardweld the surface?

Swiss

From: mc-engine@yahoogroups.com [mailto:mc-engine@yahoogroups.com] On Behalf Of Ian
Sent: Thursday, April 05, 2012 3:07 AM
To: mc-engine@yahoogroups.com
Subject: Re: Material for transmission shaft

>Ian in that thread you mention using 4340 and nitriding instead of
>case hardening. Would that be an option here?

I nitride the gear on my 1000-V8 crankshaft, but there are 41 teeth,
You are cutting 1st gear I assume, so 13 or 14T ? Nitriding will
not stand up to the punishment that 1st gear gets in a high
performance motorcycle.

>Or should I be looking for a heat treat place that can do it in EN36
>(looks to be 3310 in the US) with out distortion?

A good HT shop knows how to "hang" parts so that they get
minimum distortion - but a lot comes down to the material.
EN36A doesn't move much in HT. Get a piece of mild steel
case hardened and it comes out looking like a banana.

You can also rough machine the shaft out ( +3mm all over ) and
get it stress relieved before final machining.

> 8620 looks to be an available case hardening steel here but it
> isn't EN36 in the specs I've found.

8620 is a specialist forging steel, also with good case hardening
characteristics, it will be a good second to EN36A.

Cheers IAN

See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22362

From: Ian <iwd@...>
Date: Thu Apr 5, 2012 2:25 pm
Subject: RE: Material for transmission shaft

iwd@...

>I have a friend that is making some rocker arms from 4340.  He
>intends on Nitriding the surface that contacts the cam.  Will that
>work for wear properties or would it still be better to hardweld the surface?


I've never had any luck with "similar metal" rubbing surfaces and nitriding,
so no, I wouldn't recommend nitriding for a rocker - hard-face welding
would be better I think.


Cheers            IAN


See www.drysdalev8.com for :
- Drysdale 750-V8 Sports & 1000-V8 Cruiser
- DRYVTECH 2x2x2 Experimental
- Carberry Enfield 1000cc V-Twin
- Drysdale Hillclimb Open Wheeler

#22363

From: "Chris Cosentino" <chris@...>
Date: Thu Apr 5, 2012 3:33 pm
Subject: Re: Material for transmission shaft/ coatings for rocker arms

ccosentino2001

>>I have a friend that is making some rocker arms from 4340. He intends on
>>Nitriding the surface that contacts the cam. Will that work for wear
>>properties or would it still be better to hardweld the surface?

I had some frequent galling issues with the desmo rocker arms on the Ductax. DLC coating by http://www.anatechltd.com/ completely eliminated the problem. After coating them I couldn't tell used rockers from new ones.

Chris Cosentino
Cosentino Engineering
812 Jersey Ave. 3rd Floor
Jersey City, NJ 07310
201-392-1400
fax 484-340-1400
www.cosentinoengineering.com