Final KR Based Race Bike Project
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
Final KR Based Race Bike Project
So with winter well on its way, I have decided to spend my free time in the garage building a new race bike to keep me out of trouble.
This has been on the cards for a few months, but I've been too busy to make a start until now.
Those of you that have seen this year’s race bike will be pleased to hear that it will remain as pictured below.
This project with be built from scratch, comprising of parts I have been getting together over the last few months. It will also be the last KR based race bike project I build for myself, so I am sparing no expense with it.
I have not set any deadlines for myself, mainly because I have a perfectly good F250 already, which is ready to race. This will mean that this thread will probably not progress at my usual pace.
I will make the thread very comprehensive and won't be missing any detail out.
I hope to be consistent with progress and hope you all enjoy the build taking shape over these winter months and thank you all for your continued support.
I have made a start with bracing the swing arm.
I have no way of determining at this stage how much it will help, but it can only stand to improve the rigidity and therefore improve the handling.
The next area I will be focusing on is the petrol tank and rear sub-frame.
The production based rear sub-frame was engineered to accommodate the additional weight of a pillion passenger, which is obviously not required on an F250 racer and just adds unnecessary weight to the bike.
I will completely cut away the existing sub frame and have a custom smaller frame made up.
Pictured below is the frame and tail piece I intend on using for this project.
I had a beat up rusty old KR-1 petrol tank kicking around in the rafters I am going to use to create a mould.
I find the KR tanks okay, but the line from the seat unit to the frame too steep. I have drawn on the tank following the natural line of the seat unit, so you can see how much material I want to loose from the tank.
I will cut to this line and remove the base of the tank, fill the big dent and generally clean it all up ready to make a mould from.
This has been on the cards for a few months, but I've been too busy to make a start until now.
Those of you that have seen this year’s race bike will be pleased to hear that it will remain as pictured below.
This project with be built from scratch, comprising of parts I have been getting together over the last few months. It will also be the last KR based race bike project I build for myself, so I am sparing no expense with it.
I have not set any deadlines for myself, mainly because I have a perfectly good F250 already, which is ready to race. This will mean that this thread will probably not progress at my usual pace.
I will make the thread very comprehensive and won't be missing any detail out.
I hope to be consistent with progress and hope you all enjoy the build taking shape over these winter months and thank you all for your continued support.
I have made a start with bracing the swing arm.
I have no way of determining at this stage how much it will help, but it can only stand to improve the rigidity and therefore improve the handling.
The next area I will be focusing on is the petrol tank and rear sub-frame.
The production based rear sub-frame was engineered to accommodate the additional weight of a pillion passenger, which is obviously not required on an F250 racer and just adds unnecessary weight to the bike.
I will completely cut away the existing sub frame and have a custom smaller frame made up.
Pictured below is the frame and tail piece I intend on using for this project.
I had a beat up rusty old KR-1 petrol tank kicking around in the rafters I am going to use to create a mould.
I find the KR tanks okay, but the line from the seat unit to the frame too steep. I have drawn on the tank following the natural line of the seat unit, so you can see how much material I want to loose from the tank.
I will cut to this line and remove the base of the tank, fill the big dent and generally clean it all up ready to make a mould from.
- scooble
- Premix Junkie
- Posts: 1549
- Joined: Thu Jul 27, 2006 12:47 pm
- Location: West Sussex
- Contact:
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
No I've not considered using an alternative production tank. I only usually get through 5 litres of gas per race and allowing 2 litres for allowance and fuel sampling, I only need a small 7 litre light weight fuel cell.
Making a bespoke fibreglass tank shroud will help keep the weight down, but I also ensure it adopts the exact lines I want to achieve.
Making a bespoke fibreglass tank shroud will help keep the weight down, but I also ensure it adopts the exact lines I want to achieve.
-
- Oil Injector
- Posts: 872
- Joined: Mon Sep 07, 2009 8:33 pm
- Location: east yorkshire
-
- Oil Injector
- Posts: 926
- Joined: Sat Mar 22, 2008 5:42 pm
- Location: retford n,nott`s working in cotswolds
- Contact:
- scooble
- Premix Junkie
- Posts: 1549
- Joined: Thu Jul 27, 2006 12:47 pm
- Location: West Sussex
- Contact: