Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Killer bee red backplate Cox_ba12





Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Cox Engine of The Month
January-2022
Mark Boesen's

Twin Needle Thermal Hopper with a Cage Mount.



PAST WINNERS
CEF Traveling Engine

Dick Russ Models
Win This Engine!
Forum Store
CEF Ear Savers
Gallery


Killer bee red backplate Empty

Killer bee red backplate

Go down

Killer bee red backplate Empty Killer bee red backplate

Post  James clive Wed Jul 21, 2021 4:24 am

About to run my killer bee clone with red backplate before mounting
Measured clearance between intake and my steel test stand
Came up with 008 sounds too close to me contacted bernie who assured me cox made these in there tens of millions with no problem mounted an ran
22.200 rpm being a non believer made a 1 mm spacer plate from aluminium
Sheet ran again the result 22.200 rpm bernie was right
James clive
James clive
James clive
Moderate Poster
Moderate Poster

Posts : 13
Join date : 2021-05-05

Back to top Go down

Killer bee red backplate Empty Re: Killer bee red backplate

Post  Yabby Thu Jul 22, 2021 7:52 pm

Hi James clive,

I have several of those backplates and have never used them as i also thought more gap would be needed and that maybe i would need to make a firewall with a hole in it. I never really asked anyone either way, ut now that you have done so, and tested, I will get mine out and give them a go! Thumbs Up

Thanks.

Yabby
Yabby
Yabby
Gold Member
Gold Member

2021 Supporter

2022 Supporter

Posts : 171
Join date : 2021-06-08
Location : Murray River

Back to top Go down

Killer bee red backplate Empty Re: Killer bee red backplate

Post  NEW222 Thu Jul 22, 2021 8:39 pm

However, if used on a wooden backplate, when tightened down, it may squish some and make less that a .008 gap.
NEW222
NEW222
Top Poster
Top Poster

Posts : 3566
Join date : 2011-08-13
Age : 43
Location : oakbank, mb

Back to top Go down

Killer bee red backplate Empty Re: Killer bee red backplate

Post  Cribbs74 Fri Jul 23, 2021 1:01 am

On wood hand crafted test stands I have taken a small chisel and created a scooped out channel. It’s not needed though as seen above. I just like the idea of knowing than induction is not a variable when sorting problems.

Ron
Cribbs74
Cribbs74
Moderator

2020 Supporter

2021 Supporter

2022 Supporter

Posts : 11777
Join date : 2011-10-24
Age : 47
Location : Tuttle, OK

Back to top Go down

Killer bee red backplate Empty Killer bee red backplate

Post  James clive Fri Jul 23, 2021 2:29 am

Reply to new 222 & cribbs74
An easy way to preserve correct intake clearance whether tank or
Backplate mounted is to cut a piece of 1 mm aluminium Sheet
Screw this to the firewall with 4 small self trappers then drill & secure
With 4 servo screws into the timber firewall hope this helps
Have done it many times never a failure
James clive.
James clive
James clive
Moderate Poster
Moderate Poster

Posts : 13
Join date : 2021-05-05

Back to top Go down

Killer bee red backplate Empty Re: Killer bee red backplate

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum