How fast do you think it will go ?
#1
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Having just one last crack at the Topspeed record. Interested in how fast you think the Cossie can go in the confines of Brunters & also your guess at Peak Power required, bearing in mind Peak Power is at 7k & we will try to pull past 8k so Power is dropping bigtime.
Gearing is 217 @ 8.3k in 5th.
The problem- At 200mph you are covering about 100m/sec, so 200 to 210 will take over 600m , 200mph at the mile has to be achieved to get to 212+ & the faster you go the longer you need to stop & Brunters aint getting any longer. Its a Bugger- answers on a postcard toooooo.......
Ive my Cals & thoughts.
YOUR THOUGHTS ON WHATS POSSIBLE or IMPOSSIBLE.
Rod
Having just one last crack at the Topspeed record. Interested in how fast you think the Cossie can go in the confines of Brunters & also your guess at Peak Power required, bearing in mind Peak Power is at 7k & we will try to pull past 8k so Power is dropping bigtime.
Gearing is 217 @ 8.3k in 5th.
The problem- At 200mph you are covering about 100m/sec, so 200 to 210 will take over 600m , 200mph at the mile has to be achieved to get to 212+ & the faster you go the longer you need to stop & Brunters aint getting any longer. Its a Bugger- answers on a postcard toooooo.......
Ive my Cals & thoughts.
YOUR THOUGHTS ON WHATS POSSIBLE or IMPOSSIBLE.
Rod
#4
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Why is peak power still at 7k? I would have thought that you could play with the cams / cam timing for the run to swap peak to a higher figure to ensure that the best possible speed is attained? It seems unlike you to do this last run by halves
.
Surely if you're going to engine dyno this spec, you can do this easily, so you can have one setting for top speed runs and one setting for normal use (if you're worried about loosing response)? Would take Mark no time to swap cams for such a special event
.
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Surely if you're going to engine dyno this spec, you can do this easily, so you can have one setting for top speed runs and one setting for normal use (if you're worried about loosing response)? Would take Mark no time to swap cams for such a special event
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Originally Posted by Rab
What kind of speed can you carry onto the start of the straight?
I still say parachute
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you have had an 'un-official' 216 havent you rod??
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
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I see your point. Probably would make little or no difference I suppose.
Well, going from previous runs Rod has made, I'm going to guess that, weather permitting, he'll knock on the door or 215mph.
Well, going from previous runs Rod has made, I'm going to guess that, weather permitting, he'll knock on the door or 215mph.
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Rab, i could be wrong, it was in PF!
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It could make the difference between 206 or 215 in this case, cos its so tight for space.
tight for space at brunters? they land 747's there!! This'll be awesome.....
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It could make the difference between 206 or 215 in this case, cos its so tight for space.
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#11
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Originally Posted by pee vee
you have had an 'un-official' 216 havent you rod??
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
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Originally Posted by MADRod
Originally Posted by pee vee
you have had an 'un-official' 216 havent you rod??
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
if not what is the highest speed you have had from it in brunters to date????
having seen it will do 206 in the wet,, gotta be 215 in the dry if the run
goes spot on and with the new better spec?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
215
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#14
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Originally Posted by Mike Rainbird
Why is peak power still at 7k? I would have thought that you could play with the cams / cam timing for the run to swap peak to a higher figure to ensure that the best possible speed is attained? It seems unlike you to do this last run by halves
.
Surely if you're going to engine dyno this spec, you can do this easily, so you can have one setting for top speed runs and one setting for normal use (if you're worried about loosing response)? Would take Mark no time to swap cams for such a special event
.
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
Surely if you're going to engine dyno this spec, you can do this easily, so you can have one setting for top speed runs and one setting for normal use (if you're worried about loosing response)? Would take Mark no time to swap cams for such a special event
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
#16
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Originally Posted by SteveH
Originally Posted by Rab
What kind of speed can you carry onto the start of the straight?
I still say parachute
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#19
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Originally Posted by SteveH
Would a parachute help with decelleration at all? or is that not an option?
Im not sure what balls you have to have too brake later than we do. I did not stop shaking for 20mins after my 200 run.
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i think your peak power is quite low cos Mark based your original build on a road engine did he not...
great to drive on the road but sacraifieses(sic) a bit top end...
you need to Mark to look at the engine so it makes peak power as high as poss...
we are looking to get my peak power at 7.5 k atleast...
should be easily poss as the last engine AVA did to my spec revved to 7.8k without a drop in power at all.
surely your engine chasing revs and peak power down brunters is what you need, not past peak power and running out of space...
Mark will have a solution Rod, im sure....
great to drive on the road but sacraifieses(sic) a bit top end...
you need to Mark to look at the engine so it makes peak power as high as poss...
we are looking to get my peak power at 7.5 k atleast...
should be easily poss as the last engine AVA did to my spec revved to 7.8k without a drop in power at all.
surely your engine chasing revs and peak power down brunters is what you need, not past peak power and running out of space...
Mark will have a solution Rod, im sure....
#21
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Originally Posted by SteveH
Rod, is this going to be a private run or can we come to watch?
I live about 5 mins from brunters you see....
Parachute![Top](https://passionford.com/forum/images/smilies/smile011.gif)
I live about 5 mins from brunters you see....
Parachute
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It will be a mag run so I will just turn up
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#23
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Originally Posted by Bosch-Man
Rod....why dont you fit better brakes first..surely that will gain you a higher top speed!
Would these methods be safe to use as IMO they are using trial and error methods as no-one has gone thjis far before with the same car,
You gotta remember that they wernt desinged to create such speeds in the 1st place.
#24
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Originally Posted by luke89
rod will be mad to see your car brake 215mph
how is the new engine coming along ?
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#25
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Originally Posted by Bosch-Man
Originally Posted by Bosch-Man
Rod....why dont you fit better brakes first..surely that will gain you a higher top speed!
#27
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Originally Posted by rapidcossie
i think your peak power is quite low cos Mark based your original build on a road engine did he not...
great to drive on the road but sacraifieses(sic) a bit top end...
you need to Mark to look at the engine so it makes peak power as high as poss...
we are looking to get my peak power at 7.5 k atleast...
should be easily poss as the last engine AVA did to my spec revved to 7.8k without a drop in power at all.
surely your engine chasing revs and peak power down brunters is what you need, not past peak power and running out of space...
Mark will have a solution Rod, im sure....
great to drive on the road but sacraifieses(sic) a bit top end...
you need to Mark to look at the engine so it makes peak power as high as poss...
we are looking to get my peak power at 7.5 k atleast...
should be easily poss as the last engine AVA did to my spec revved to 7.8k without a drop in power at all.
surely your engine chasing revs and peak power down brunters is what you need, not past peak power and running out of space...
Mark will have a solution Rod, im sure....
I dont want to go too extreme cos its my road car & I want to drive it in record breaking Spec.
#28
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Originally Posted by SteveH
Would a parachute help with decelleration at all? or is that not an option?
Im not sure what balls you have to have too brake later than we do. I did not stop shaking for 20mins after my 200 run.
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If its dry then Im sure it will do whatever Mark wants it too...well almost
, he doesnt make a habit of getting things wrong does he
, my moneys on a 212mph run.
PS Rod in that PM you said if I wanted I could join you at Brunters
, does this offer still stand
Only kiddin mate, too far to travel, Good Luck Anyway
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PS Rod in that PM you said if I wanted I could join you at Brunters
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Only kiddin mate, too far to travel, Good Luck Anyway
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#39
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Originally Posted by Stu.H
Rod out of interest, whats the top speed you have had out of it, in no confided space?
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