Author Topic: What can you identify about these 2 RD race bikes? an RD350 and a 250  (Read 307 times)

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Offline blackvisor

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These 2 bikes were owned by the same guy who built the yellow cafe racer special which I've listed in the for sale section, he died (from an illness, nothing to do with bikes) sadly earlier this year.

The one with #14 on the fairing is a 350. It is pretty much complete, I haven't tried to start it because there's no fuel in the tank, but it looks to have been parked up after a race and left. Its been stored in the dry. It has a load of scrutineering stickers from UK racetracks, and the previous owner had about 20 trophies for podium places in the late 1990s early 2000s.

The other one is more of  a project. It was in large bits at the time of death. Its barrells have 249cc stamped on them.  I have put it back together as best I could to make it moveable, and to identify what is there. Some engine covers were off, the exhausts are held on with cable ties. some frame components have been bagged and taped to the frame.

There's also some spares for sale with them, not a huge amount, some engine components, about 6 or 8 NOS pistons, about 10 barrells in various states of rebore, and 3 or 4 wheels

I'm trying to sell them on behalf of the deceased's wife.

My questions are:
-what can you identify about them
-would you sell them as a pair or separate?
-How/where would you advertise them?


























































Offline stukey

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there look to be a few trick bits on them but racers are notoriously tight. I would try classic racer forums and possibly mag. Evilbay is another option but start at price you would  be  happy with breaking for spares is probably best value return if you can put up with all the chancers and dreamers out there
Rd 350 special can we get more than 70bnp?
Silver-dust 350b now with new owner
Barnfull of A/b stuff
and not forgetting the r6 streefighter
 R1Z 250

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  • Peter
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350 seems to be largely based on a RD, can’t see wether its engine is running dry clutch . In contrast the 250 seems to have TZ basis, frame isn’t RD but also doesn’t look like factory so might be spondon etc. Twin shock would make it ‘A’. Original TZ swing arm ,Fuel tank looks like Original TZ , dry clutch implies a trick box or TZ box. Race  ignition with TZ cover.

Take some pics of the 350 engine , sides in particular. Is it also dry clutch ?
Also have a look for identification on the wheels as they look interesting.
« Last Edit: July 29, 2019, 06:23:24 PM by betty foRD »
Rev 'em till they rattle

Offline blackvisor

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THis is the 250 engine, with dry clutch.

I am away from home at the moment so not got access to take photos of the 350. What would be the significance of a dry clutch on it?

I know that the previous owners ebay purchase history is mostly a mix of RD and TZ purchases

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  • Peter
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Dry clutch implies more likelihood of a TZ box and or engine, defo strait cut gears etc.

Proper TZ race parts are worth good money, modified RD parts have much less so.
Rev 'em till they rattle

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  • Peter
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Can see from those extra pics that the frame is defo not RD....which is good news for you..
Rev 'em till they rattle

Online kawazonkey

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And LC carb rubbers. They both look like they would restore quite nicely and most parts are there. If you had them as running bikes and sold as resto projects they may do well on eBay. Maybe a BIN price and leave them there for a month? See if you get any interest.

Offline blackvisor

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Can see from those extra pics that the frame is defo not RD....which is good news for you..

Any idea what the frame is on that 250? I googled spondon frames and couldn't find a picture to match, though most of those were monoshock. I think it has a spondon caliiper though.

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  • Peter
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Can see from those extra pics that the frame is defo not RD....which is good news for you..

Any idea what the frame is on that 250? I googled spondon frames and couldn't find a picture to match, though most of those were monoshock. I think it has a spondon caliiper though.

When you get back start by checking what’s VIN number is on the headstock. Then go from there. Same with the engine number on the cases of the 250, see what that is. cant make up my mind if it’s TD2 or TZ based.
Rev 'em till they rattle

Offline blackvisor

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Therein lies a problem, the 250 bears all the marks of having been stolen in the bad old days for racing. THe engine number has been smoothed off and a new one which is "bore X stroke" stamped on. It's frame number has also been ground off and a new one (six plain digits) stamped on.
I doubt the previous owner would have nicked them, he had a well paid professional job.

On the 350, the frame number has been partially obliterated by a the bracket which holds on the front fairing.

The detective work I have had to do with these bikes has been a real PITA. The previous owner seems to have kept the information in his head, and it went with him to the grave.

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  • Peter
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Re: What can you identify about these 2 RD race bikes? an RD350 and a 250
« Reply #10 on: July 31, 2019, 09:32:27 PM »
What are the six digits on the frame? Message me if you don’t want them in plain sight.
Rev 'em till they rattle

Online 5port

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Re: What can you identify about these 2 RD race bikes? an RD350 and a 250
« Reply #11 on: August 06, 2019, 11:08:59 AM »
Hi!  The "14" bike looks to be a RD350 engine in a modified RD frame.  No visual of the frame number.  Doubtless ported barrels that might be R5. Newish big Mikuni carbs,  Alloy tank, RD forks / wheels, TZfront disc.  Engine internals always debateable but I guess RD.  Overall, could be a good basis for someone as a classic RD race or track bike.
Now, I think the second bike is more of an original race bike.  Frame looks to be a specialist TZ250/350 from about '76 onwards, might possibly have been a mono-gone back to twinshock, no rad mounts, TZ Tank. Looks like TZ yokes/forks/wheels/discs (mod)/rear swingarm/tank.  Newish big Mikuni carbs.  Dry clutch engine, as Betty says, might have TZ box. RD probably ported cylinders.  I think this was possibly a TZ C or D that has had a new frame (40 yrs ago!) and eventually worked down to an aircooled version.
On race bikes, the engine numbers and frame numbers can be anything.  Original numbers are possible but, just as likely are anything else!  The specialist frame might have a very simple number. 
Overall, probably a genuine TZ in its 3rd re-incarnation.  Could be a reasonable value if frame is OK and engine TZ bottom end. Those TZ forks alone worth £1000+ if correct.  Cheers

5port
5port