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Hi All,

Want to validate something that I heard before I spend any more money on the race bike...

A little background: I have been running a total loss Vape/Powerdynamo racing ignition on my AHRMA bike for several seasons now and it has performed flawlessly. I recently decided to change classes and rebuild the bike for considerably more horsepower (moving from mid-30s to mid-60s).

My porting guy asked if my ignition had static timing or operated on an ignition curve. I believe that I read that the Vape units are static so have been eying the PVL units. Problem is - I can't find any solid info as to whether either system has static or dynamic timing. Can someone more knowledgable weigh in here?

Thanks!

Re-doing the race bike at the moment and giving some thought to the bodywork. I was thinking that this dunstall upper fairing would look all wrong with the TD2 bodywork (TZ-style tank), but the initial mockup actually looks.... pretty awesome to me. What does the hive mind think?

Hey Folks,

I have been getting better with the TIG welder recently and I believe it's time to stiffen up this RD350 frame a bit. Is there any established thinking on where/how to add metal to maximize stiffness? I have seen a variety of things done on similar bikes at the racetrack and haven't been able to discern any best way...

Thanks in advance!

[So...]

Hey Folks,

Here's the deal - I'm racing with AHRMA these days and looking to do some tinkering over the coming off-season to bolster my mechanical advantage come next year.

The stock front brake rotor is a boat anchor, even drilled like mine. I have a Grimeca (Lockheed copy) caliper that I'll be using, so I have to make a caliper adapter anyway. As I see it, the sky's the limit for rotors as long as I play by the rulebook. I have a lathe and can turn an adapter if the offset needs to be adjusted outwards.

So... What's the best fixed rotor with an RD350 hub bolt pattern? I have looked and looked and can only find floating rotors, which are not allowed per the rulebook. Something larger and much thinner than stock would be ideal.

Thanks in advance!

Just received my pair for my RD400 in the mail and wondering why there's not more chatter about these. Dave was a perfect gentlemen to deal with and the price was very right compared to the competition. Made to order, but he got them to me in just about the 6 weeks that was promised.

I'll be welding the stingers and hangers up soon and should have the bike back on the race track either June or August. Will report back on results.

Terrible picture, I know, but I'll take some more as things progress if there's any interest.

Just sharing a really cool video that Youtube suggested to me today. Not a lot of views yet so I wager most of you haven't seen it:

Was just messing around with the lathe the other night and knocked this up. I'm running an Scitsu tach on the race bike. Any good reason not to do something like this? Seems like less rotating mass that the engine has to drive and I can't really see the harm in it but what do I know.

Hey Y'all,

I was active on the old forum and am going to try and be more active on the new one. So glad that this resource is still with us!

Thought I'd start a thread to show off my production race bike & maybe document my ongoing adventures with it. Any other vintage racers on the board?

This bike is a mongrel made from a couple of different 350s and built to suit AHRMA's Novice Historic Production Heavyweight rules. I am in my 3rd racing season now and have been running pretty strong recently (3 win across the past 2 race weekends). Big changes to the bike are stripping all the street equipment off(of course), Progressive shocks, emulators in the forks, a Vape total-loss racing ignition, y-boot & K&N filter combo. Before my next race in June I'll be swapping in a 400 motor, changing the front brake setup to a Lockheed + Brembo MC combo, fitting Swarbrick expansion chambers, and doing some other various spiffying up and tidying.

As of today, the plan is to run 2-3 more races this season and then build her up into a full GP replica to run in the Formula 500 class in 2023. I'm fortunate enough to live just down the road from Mark Morrow, so I'll have his mentorship and guidance as I leave the novice class and start racing with the big boys.

A couple of race videos:

As I brought her home from Nashville back in 2017


Racing in the hurricane at Barber a couple of years ago


As she sits today


My first aluminum welding project - finally ditched the roasting pan held to the frame with hose clamps

Hey Folks,

I'm about to swap over from a stock MC & caliper setup on my RD350 race bike to a Brembo / Lockheed combo. I'll need to make an adaptor plate for the new caliper and while I'm at it, I was considering the following...

My caliper rides on the front of the fork lower on the right hand side. Any reason I can't swap the fork lowers and run it on the back of the left hand side? I guess this is mostly for vanity's sake but I do sometimes worry about the brake line being way out there in the breeze in the event of a crash.



Thanks!