My derbi project

[phi1]

Hi all, As most of you well know my bike blew up and I have been having major problems with it. I have since completely stipped the engine and starting to get somewhere with the bike so it will be perfect.

Below is a list of Jobs im going to do to the bike before it's finnaly done!

1. rebuild engine with all the new parts!
2. Polish frame and swingarm
3. Polish the rentals bars I have and put on!
4. Get new front tyre continential to match back
5. Once all rebuilt get a dyno run!

Anyway here is the parts I have ordered today so should get the ball rolling apart from I go on holiday on thursday for 2 weeks!

DOPPLER ENDURANCE CRANK 1 £99.99
DERBI GPR HEAVY DUTY CLUTCH 1 £34.99 £34.99 KIT (METRAKIT)
POLINI 80CC KIT 95-05 MOTOR 1 £128.99
HEBO PERFORMANCE REED BLOCK 1 £28.99 £28.99
RENTHAL WAFFLE GRIP 1 £6.80 £6.80

Once I ordered I realised that the polini was only 95-05 but I gave them a phone and it was a mistake on the website! So all is good! I shall update here with my progress but won't really be a great deal till I am back from holiday!

[daniels rx50]

sounds good mate hope it all goes well

[phi1]

Yeah I hope so 2! Just hoping that polini is deffo the right one lol!

[bradders]

Run it in before you Dyno, lol.

[phi1]

yeah a good 500 miles. I need to find somewhere that does dynos near me anyway!

[bourney2007]

sounding good mate. Where did you get the polini kit from for that price??? if it was from pmtuning then you know the price dosn't include vat don't you?

Should be a very nice bike when it's all done mate.

[phi1]

bike-spares are doing 15% off everything on there website so it basicly works out almost vat free! I saved £49 why I decided to order! Still got a few bits and bobs to get but I can get most of the work done now!

[phi1]

ran into a little problem. Bike spares phoned me today saying the cylinder kit was the wrong one. He recons I need a newer version of it for an extra £40 can anybody shed any light on this because I can't face getting the wrong one. He has added that to my order just want it to be the correct one. In the picture of the cheaper 80cc polini looked like it was the right one. I am going to give them another call tomorrow to make sure. If anybody has any ideas would be great

Phil

[Royzx]

I'm guessing you need the newer one because the other ones prob for the >05 engine?

[phi1]

I can only hope! Got my engine number to give them another phone tomorrow! Dunno what jet to start on when it's all running I asked him and he said 95 is about right but it's what I am running now and seems a bit low?

[Carbon-Me1]

SO start at about 105, but i bet your running a bit rich atm.

[bourney2007]

SOMETIMES! when you add a bbk you lean the mixture off. Especially if you're using the standard filter.
As the cylinder is drawing in more air due to it's increased capacity it's pulling more fuel along with it, so the mixture is too rich.

This is what the guy at the garage told me when i took it to have it jetted (i darn't do it myself lol). I'm running an 85main jet now with the spec in my sig (minus the performance filter). Works fine. I've give it a good ragging lol and it's being no problem.
Havn't checked the plug though funnily enough lol.

[phi1]

Yeah just gonna be trial and error, I hate the standard air box cause it's such a pain in the ass. We shall see also bourney you coming on msn have a few questions about the bore kit?

Phil

[bourney2007]

Yeah just gonna be trial and error, I hate the standard air box cause it's such a pain in the ass. We shall see also bourney you coming on msn have a few questions about the bore kit?

Phil

Yeah sure be on in a min.

The standard air box is a pain in the arse to get in and out of the frame but the constant drone of the performance filter if you go down a roads etc does my bloody head in. That and when it snowed a while back i had real trouble running the bike (snow on filter, melted into water, obviosuly lol, and give me shit lol), so not even going to risk anything

[phi1]

Hi all, I thought Id give you all an update, I am getting there. Have put all the new parts in the engine and got the engine back in the frame, Got the carb on there and the standard airbox, may well switch back to the MK filter but more chance of getting into issues with the police with that on there. Just got to put the fluids in there and we are ready to run. I have decided to run pre-mix till it's run in then going to-do an oil change and get it running on the MK filter. Hopefully should get it fired up tomorrow and then sort the jetting out to perfection! At the moment I have got a 92 in there thats so I recon that will be about right will do a couple of plug chops and then work it out from there. Will take some photos of the bike tomorrow. I sprayed all the engine casing silver and a few coats of clear to protect it. Also sprayed my starter motor red which is a nice contrast. Since I got everything reconnected today felt the new clutch and it feels stiffer than the old one I can only guess this is due to it having the stronger springs?

Phil