CR750 first ride

[gamma]

Hi James and Mark, I had already made this,

A new battery tray with reg/rec and fuse box etc:, but nice idea about tank.
James I am sending a couple of photos soon of my spare F1 frame I just took in Saudi, can you compare as best as you can with your K2 and send me some pics. I shall also send pics of tank that didnt fit.

[gamma]

[URL=http://s192.photobucket.com/user/galaxy8155/media/IMG_57421.jpg.html]

[MarkCR750]

Looks pretty much the same as my K7 frame did Gamma, I doubt there is much difference between the two.

[gamma]

I agree Mark, here are the photos of the tank i bought and then returned.  The tunnel was too narrow to go over the outer frame rails, and the cut-out underneath did not match the frame triagular supports.  I also realised that the front of the tank was not going to allow clip-ons.







sorry about size of photos

[MarkCR750]

I wouldn't be surprised if your previous tank had been made for a CB550, and not very well by he look of things  , you're in for a nice surprise if you haven't seen Asa Moyes  work  before (Bartel Engineering), the guy is a genius (see below,photo not taken from the best angle but obviously a quality product).

[gamma]

The tank was big and actually quite good but would probably suit the 550 frame. I am familiar with the Bartel tank having seen pictures of it before but was originally looking for something more like a big endurance type tank. However, I am now becoming more interested in a quality product  that is available and will have to rethink my battery/ oil tank options. I wanted more of an endurance type look which is why I bought the motogpwerks exhaust. I had already made up braided hoses for the original oil tank and also manufactured a complete wiring loom from scratch ( I'm not an electrician, but how hard can it be? ha ha) Removed the electric starter. Also using tarozzi rear sets with my own modifications. Also using digital tachometer and speedo from KOSO.

[MarkCR750]

The tank was big and actually quite good but would probably suit the 550 frame. I am familiar with the Bartel tank having seen pictures of it before but was originally looking for something more like a big endurance type tank. However, I am now becoming more interested in a quality product  that is available and will have to rethink my battery/ oil tank options. I wanted more of an endurance type look which is why I bought the motogpwerks exhaust. I had already made up braided hoses for the original oil tank and also manufactured a complete wiring loom from scratch ( I'm not an electrician, but how hard can it be? ha ha) Removed the electric starter. Also using tarozzi rear sets with my own modifications. Also using digital tachometer and speedo from KOSO.

I'm not in a position to judge electrical expertise after connecting my battery backwards and burning out my first loom! , the 90 degree turn of the oil tank and battery under the seat hump give an uncluttered look that I prefer, but it's all down to personal choice. I have a gel battery fitted at present but will swap to a lithium battery because they are so light, it will be a shame not to use the bits that you have already made but I have made and discarded several parts during my build so far, I will be changing my rear sets and no doubt a few other things for better quality items as the build goes on, 4 into 4 exhaust etc,  all part of the (expensive) fun really!.
PS watch this space re my economy race tacho build!.

[gamma]

i have done my own thing on the project, here is the mount for the clocks

made a chain guard

modified the top yolk

took me a long time to work out the wiring, hopefully wont all go up in smoke

[MarkCR750]

Very neat work, 15k revs is maybe a tad optimistic though  , unless your fitting a 400/4 engine, I know a breaker that tried to blow up a 400/4 years ago when they were worthless, he taped the throttle wide open, left it revving its head off for ten minutes, it ran perfectly afterwards!!, I doubt our 750 lumps would survive that.
I'm making my own Tacho including the dial so I can put whatever scale on there I like, might half the increments and have it show a 19k red line 

[gamma]

  yeah can't remember why I went for that tacho, probably couldn't get one of the small ones in the right rpm range needed. But hey ho, won't be looking at it much, especially when I miss a gear  .
Interested to see what you come up with

[hairygit]

What makes you think the 750 engines is any less reliable at sustained high r.p.m? Many 750's were seriously tuned back in the 70's and raced hard, Russ Collins (U.S. Drag racer) often said the bottom ends were practically indestuctible even as standard, he ran supercharged big bore kits on stock bottom ends, with no major weaknesses showing up.

[MarkCR750]

My guess is that the small size and lightness of the reciprocating parts of the 400/4 allowed it to survive 10 minutes at 14k revs in neutral , you could be right, maybe the 750 could do the same but I won't be trying it with mine 😀

[MarkCR750]

yeah can't remember why I went for that tacho, probably couldn't get one of the small ones in the right rpm range needed. But hey ho, won't be looking at it much, especially when I miss a gear  .
Interested to see what you come up with

Here's my first attempt Gamma, I was going for the uncluttered look but I think I've overdone it, too uncluttered so I'll change it, so far it's cost about £7 so plenty of scope for improvement 😀

[gamma]

Electric or cable?

[MarkCR750]

Cable, its the original rev counter from the K7 donor bike with its face sprayed matt black and numbers applied with lettraset, the chrome bezel is from a Triumph sports car , total cost £7, think I'll change the design though , I have plenty of lettraset left!