Racing Hinckley Sidecar Outfit

Hello to all of you, My name is David Sykes and I race vintage outfits. I'm building two new outfits powered by first generation Hinckley triples (750cc & 885cc). The outfits are "big wheelers" - a minimum 17" diameter wheels with a platform on the side . . . definitely NOT a kneeler. They will be racing in the British Historic Racing BEARS series. Now I know a fair amount about building and racing sidecars but very little about Triumph triples so would welcome advice re strengths and weaknesses. I'll be racing against mainly K series BMWs some of which are 1200cc (though retaining the two valve head) and are quick. If anyone fancies a go on the side give me a shout. Cheers, David

 

Hi mate and welcome
Bit on the side eh?
She’d chop my bits off

 

Hello DS and welcome to the forum

I guess you’ll be participating in BHRC events

 

Hi David.

If you feel the need for a bit more speed/power in the 885cc lump then try sticking a set of 750cc pistons in it. Same bore size but higher compression. Every little helps (as the old lady said as she peed into the sea!).

 

Hi Dave welcome to the nut house you should fit right in.
Tucker

 

Thanks for that, I'm allowed up to 1300cc so long as the external appearance of the engine is unchanged; what's the story with cams?

 

Not sure about other tuning methods - sorry. I just read that the pistons were a simple power boost and therefore a good place to start.
You could look into the Daytona Super 111 engine which was a tuned version giving around 115bhp if memory serves, by the good folk at Cosworth.

 

To 3 wheeler man,
Have you thought about a 1200 four cylinder motor like one of the originals from 1990,s was it the Trophy?
Good luck with your project.
Cheers, Pete

 

Daytona 1200 gives 147bhp - allegedly!
Not much good if you've only got a triple however!

 

Thanks for your thoughts Pete, but the BEARS series is about pitting relatively equal performing bikes against each other; the 1200cc trophy would raise the bar maybe too much.

 

Thanks for your thoughts Pete, but the BEARS series is about pitting relatively equal performing bikes against each other; the 1200cc trophy would raise the bar maybe too much.

 

Hiya david, a little while has passed since you posted this thread and was wondering if you manage to complete your outfit projects and get them up and running, I'd be very in interested to see a pic of you have one,

 

Hi and welcome....

 

Hi some tips on cheap tuning options !! The carburetors are jetted about right bit expensive to swap out and tune so a better option try this :- take tops off the carburetors and remove pistons , they have a drilling / port to one side of the needle , drill this hole out a smidgen , use number drills if you have them ! Lift the needle with washers , do it in stages , so one number drill size bigger and 30 thou or so washers and reassemble test and assess. Go no more than 4 or 5 number drill sizes up , you will get more torque and better throttle response ! Adjust drive ratios for extra acceleration too it's a cheap option ! I did this in combination with K & N air filter & a 3 into 1 exhaust which was wide open and loud !! The std cams in the trident are the fastest option for top speed ! The speed super 111 has the most aggressive cams but power is all up top so torque is down in the mid range as against trident !
I had 1994 trident top speed according to owners manual (std everything) is up 5 klms on all other models/motors ! And found air filter , exhaust and the above mentioned modifications to the carburetors makes them about as fast as they can be without pulling the motors apart .

Cheers capt.