who modifies glow engines professionally ??
04-13-2017, 12:23 PM
#6
I've modified some car engines. It's a time consuming process. The $120 price tag the professionals charge seems like an injustice considering the time it takes to do an engine.
04-13-2017, 12:52 PM
#7
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The point is, why modify an older engine setup with muffler timing, when you can easily buy engines designed to use a tuned pipe (and their recommended tuned pipe). OSMAX 65VFDF go for a song on ebay or RCGroups.
Last edited by boater; 04-13-2017 at 12:54 PM.
04-13-2017, 04:30 PM
#8
Not everyone wants to spend $250+ for a high performance engine - especially if they already have a pile of engines. A couple hours with some hand files and a little finesse and you can have a low rpm slugger churning some decent rpm. I know a guy getting over 18,000+ on a 9x8 APC from an Italian Super Tigre .45 that was hand modified. Modifying buggy/RC truck engines is very common. It's amazing what just a little work on the crank can get you! At least 50% of the power boost-ability is in modifying the crankshaft alone.
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".
Last edited by 1QwkSport2.5r; 04-13-2017 at 04:33 PM.
04-13-2017, 04:35 PM
#9
Boater, because if I did that it wouldn't be a hopped up HB PDP,, besides, I am not looking to produce a Maximum Effort racing engine.
look at it this way, if you saw an old car with an old hopped up Ford V8 Flat Head or an old Pontiac Straight 8 would you tell the own that he should have bought a Chevy Crate Engine
look at it this way, if you saw an old car with an old hopped up Ford V8 Flat Head or an old Pontiac Straight 8 would you tell the own that he should have bought a Chevy Crate Engine
Last edited by the Wasp; 04-13-2017 at 04:38 PM.
04-14-2017, 01:06 PM
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A Perry pump and Perry Pump Carb would be an easy bolt-on addition. Clarence Lee may even be able to supply. HB61 was very much like the Veco 61. A backplate mounted Veco 61 pump may even fit a HB 61.
04-14-2017, 03:40 PM
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[QUOTE=1QwkSport2.5r;12326349. I know a guy getting over 18,000+ on a 9x8 APC from an Italian Super Tigre .45 that was hand modified.
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".[/QUOTE]
I got over 19,000 on the ground with a K&B 40S stock engine, Revup 9x8&1/2. Many ducted fan guys get excellent performance from OS ABN sleeves, I never had a OS 65VRM sleeve peel and I ran 60%. There is one guy selling OS 90 VRDF's used 3 for $325.00 on RCGroups .
PS The K&B 40S wasn't stock, it had the head modified to take a 1S plug, instead of the 1L plug. LOL
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".[/QUOTE]
I got over 19,000 on the ground with a K&B 40S stock engine, Revup 9x8&1/2. Many ducted fan guys get excellent performance from OS ABN sleeves, I never had a OS 65VRM sleeve peel and I ran 60%. There is one guy selling OS 90 VRDF's used 3 for $325.00 on RCGroups .
PS The K&B 40S wasn't stock, it had the head modified to take a 1S plug, instead of the 1L plug. LOL
04-15-2017, 06:04 AM
#19
Sometimes doing your own modifications is more fun. It's fun to take a $50 engine and make it really run hard with some mods. This is coming from someone that HAS some Jett engines. In fact the two Jetts I have cost me nearly $1000 together. Not everyone wants to spend that kind of money - and really - if you have the right base engine to start with, there is good power to be had from modifying it. It's VERY common with RC car engines. Guys buy $200 engines, spend another $120 to get it modified, and the results are equal to or better than the $500-600 stock race engines. Often they're better.
04-16-2017, 06:01 AM
#20
Not everyone wants to spend $250+ for a high performance engine - especially if they already have a pile of engines. A couple hours with some hand files and a little finesse and you can have a low rpm slugger churning some decent rpm. I know a guy getting over 18,000+ on a 9x8 APC from an Italian Super Tigre .45 that was hand modified. Modifying buggy/RC truck engines is very common. It's amazing what just a little work on the crank can get you! At least 50% of the power boost-ability is in modifying the crankshaft alone.
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".
I think the point being made here here is that there just is not much potential in that HB engine. You just can't get too crazy on opening the ports on a ringed engine without the ring getting caught on the port edge. A good reason why virtually all high performance engines are ABC, ABN or AAC.
Im not quite at the point of calling anyone a liar but a ST .45 spinning an APC 9x8 at 18K is simply not possible no matter what you do to it. I have to call BS on that claim. I used a Rossi .45 that not only had the factory VP mods done to it which mainly consisted of opening the ID of the crank, then fluting the passage out the back of the crank and then shot peeled, but I did some streamlining of the ports and opened up the exhaust port to 180 degrees and ran a Jett tuned muffler and 20% nitro. It spun an APC 9x7.5 at 17,200 on a good day.
Not saying it is not fun to mod up your own engines, just don't expect the same performance from a modded sport engine then what you would get from an engine that was designed from the ground up for high performance. That Pontiac Overhead cam straight 6 was an awesome engine but could only be taken so far and then reliability issues came up. Mickey Thompson showed us that.
04-16-2017, 07:20 AM
#21
I think the point being made here here is that there just is not much potential in that HB engine. You just can't get too crazy on opening the ports on a ringed engine without the ring getting caught on the port edge. A good reason why virtually all high performance engines are ABC, ABN or AAC.
Im not quite at the point of calling anyone a liar but a ST .45 spinning an APC 9x8 at 18K is simply not possible no matter what you do to it. I have to call BS on that claim. I used a Rossi .45 that not only had the factory VP mods done to it which mainly consisted of opening the ID of the crank, then fluting the passage out the back of the crank and then shot peeled, but I did some streamlining of the ports and opened up the exhaust port to 180 degrees and ran a Jett tuned muffler and 20% nitro. It spun an APC 9x7.5 at 17,200 on a good day.
Not saying it is not fun to mod up your own engines, just don't expect the same performance from a modded sport engine then what you would get from an engine that was designed from the ground up for high performance. That Pontiac Overhead cam straight 6 was an awesome engine but could only be taken so far and then reliability issues came up. Mickey Thompson showed us that.
Im not quite at the point of calling anyone a liar but a ST .45 spinning an APC 9x8 at 18K is simply not possible no matter what you do to it. I have to call BS on that claim. I used a Rossi .45 that not only had the factory VP mods done to it which mainly consisted of opening the ID of the crank, then fluting the passage out the back of the crank and then shot peeled, but I did some streamlining of the ports and opened up the exhaust port to 180 degrees and ran a Jett tuned muffler and 20% nitro. It spun an APC 9x7.5 at 17,200 on a good day.
Not saying it is not fun to mod up your own engines, just don't expect the same performance from a modded sport engine then what you would get from an engine that was designed from the ground up for high performance. That Pontiac Overhead cam straight 6 was an awesome engine but could only be taken so far and then reliability issues came up. Mickey Thompson showed us that.
As far as the ST .45 claim - I haven't seen it run in person, but maybe you could. Talk to Jeff - airraptor. I think he lives near you? It's his engine. He runs a black Q40 Jett muffler on it.
04-16-2017, 09:04 AM
#23
I know Jeff very well and fly with him fairly often. As far as the claim on the ST I would call him on it as well. However that claim was made 5 years ago and I beleive he has learned a bit since then. Just for giggles, here is the last time we raced, I'm sure you will be able to find both our names.
