MT-62
#1
Thread Starter
My Feedback: (2)
Join Date: Dec 2007
Location: Fort McMurray,
AB, CANADA
Posts: 4,121
Received 0 Likes
on
0 Posts
MT-62
I don't recall seeing any threads devoted to the MT62 so I figured I'd start one. I just bought one from Thunderbolt RC up here in Canada. It looks to be a very good engine, especially when you consider the price. If I recall it weighs around 63~64 ounces complete with muffler, ign., and standoffs. I opted to buy a Zenoah plate mount to go with it as well as seen lying beside the engine in some of the pictures. When I ordered the engine I was asked if I would like to try one of MTs new mufflers with it, which I did. I looked inside and the pipe goes all the way inside and has holes drilled in it to allow the exhaust to travel from the can into the pipe. I doubt I will ever have to worry about this pipe falling off the muffler. The carb is a Walbro HDA with 15.08 venturi. The arms are the standard small Walbro ones which I removed and added my own. The engine was also available with the standard two pipe muffler. Another nice thing is the lower end, cylinder, and piston etc. are the same as the G62 so any mount or muffler for the G62 will fit as well as the Zenoah engine parts. Not much more I can say at this point as it is -30C outside so I won't be able to run it for 3 months or so. I did see a video here on RCU of a Great Planes Giant Reactor with a G62 in it and it looked to perform very good and sounded nice.
#2
Join Date: Jan 2006
Location: Kalona,
IA
Posts: 2,517
Likes: 0
Received 0 Likes
on
0 Posts
RE: MT-62
Here's a nice mount to use on the 62....the flat plate will often leave the cylinder too close to the engine box/firewall to allow for good cooling, and this is a very inexpensive, readily available, and sturdy option as compared to using standoffs.
http://www.horizonhobby.com/Products...D=ZEN289874110
http://www.horizonhobby.com/Products...D=ZEN289874110
#4
Thread Starter
My Feedback: (2)
Join Date: Dec 2007
Location: Fort McMurray,
AB, CANADA
Posts: 4,121
Received 0 Likes
on
0 Posts
RE: MT-62
ORIGINAL: CJW123
Same dimensions..... "From" implies the parts are genuine G62...No way
Same dimensions..... "From" implies the parts are genuine G62...No way
#5
Thread Starter
My Feedback: (2)
Join Date: Dec 2007
Location: Fort McMurray,
AB, CANADA
Posts: 4,121
Received 0 Likes
on
0 Posts
RE: MT-62
arobatx
I saw that mount as well. I am wondering if the plate mount can be used with standoffs behind it. If it causes vibrations a person can just build a box out from the firewall with plywood to adjust for length. I seen some cup mounts too.
I saw that mount as well. I am wondering if the plate mount can be used with standoffs behind it. If it causes vibrations a person can just build a box out from the firewall with plywood to adjust for length. I seen some cup mounts too.
#6
Join Date: Jan 2006
Location: Kalona,
IA
Posts: 2,517
Likes: 0
Received 0 Likes
on
0 Posts
RE: MT-62
Ralph makes a cup mount, Bennett makes one...and I'm sure there are others as well. I like those cup mounts as well... The one above from horizon positions the engine appropriately away from the engine box for cooling, and it's only 4 bucks. Simple and effective...and lightweight to top it off. I've used the flat plate with standoffs, but prefer hardwood standoffs to the machined aluminum ones, especially in longer lengths.
#7
My Feedback: (98)
Join Date: Feb 2002
Location: The Villages, Florida NJ
Posts: 4,677
Likes: 0
Received 0 Likes
on
0 Posts
RE: MT-62
The MT62 is my favorite engine, replacing the Brillelli 366GT. The two engines are so close in performance I was getting the exact same rpms using the same props, and the MT62 is about 1/2 the price, I still love my Brillelli though. I got a lifetime supply of MT62, six to be exact, so I'm going to be stuffing them in everything.
In the picture the MT62 has a Ralph Cunningham carb rotator block on it. The black plastic one that comes with the engine is too soft and splits so this cured that problem. Ralph's rotator block uses a external pressure pulse tube that you have to put on the engine, so if you don't want to do that use TBM's, it's the black block that's pictured. The brown sheet the engine is sitting on is 3/8" phenolic board that I'll use for carb rotator blocks.
My first MT62 went into a SD 260 Extra, just bolting the engine directly to the firewall. The firewall flexed so much it broke the aluminum angle braces they use to hold the firewall in, so now I'm going to be using 1/4" aluminum plate behind the engine to spread the load out over a larger area on the firewall.
Just about any header will fit the MT62 because of the way the header bolts up to the engine, that's a big plus to me.
I picked up some 1/4x32 plugs and adapters, I'm going to be making a speed plane and don't want a spark plug sticking way out into the breeze. I may also try running it on glow with nitro and alcohol.
Get a velocity stack for your carb, it needs one. I think all piston ported engines need a velocity stack to catch the air/fuel mix that comes out of the carb, reed valve engines don't need one though.
In the picture the MT62 has a Ralph Cunningham carb rotator block on it. The black plastic one that comes with the engine is too soft and splits so this cured that problem. Ralph's rotator block uses a external pressure pulse tube that you have to put on the engine, so if you don't want to do that use TBM's, it's the black block that's pictured. The brown sheet the engine is sitting on is 3/8" phenolic board that I'll use for carb rotator blocks.
My first MT62 went into a SD 260 Extra, just bolting the engine directly to the firewall. The firewall flexed so much it broke the aluminum angle braces they use to hold the firewall in, so now I'm going to be using 1/4" aluminum plate behind the engine to spread the load out over a larger area on the firewall.
Just about any header will fit the MT62 because of the way the header bolts up to the engine, that's a big plus to me.
I picked up some 1/4x32 plugs and adapters, I'm going to be making a speed plane and don't want a spark plug sticking way out into the breeze. I may also try running it on glow with nitro and alcohol.
Get a velocity stack for your carb, it needs one. I think all piston ported engines need a velocity stack to catch the air/fuel mix that comes out of the carb, reed valve engines don't need one though.
#8
Thread Starter
My Feedback: (2)
Join Date: Dec 2007
Location: Fort McMurray,
AB, CANADA
Posts: 4,121
Received 0 Likes
on
0 Posts
RE: MT-62
Rich
When I talked to Ralph he was telling me the way he drills the holes for the pulse port in the block, so I believe he must be making them two ways now. Either way I will find out when it arrives. I personally like them with an external pulse port. It gives you the option of rotating the carb to put the arms on the other side if needed. Plus you don't have any headaches of the gasket or silicon plugging the hole. Do you have a pic showing where you tapped your case for the nipple?
You'll have to let us know how your experiment works out.
Doug
When I talked to Ralph he was telling me the way he drills the holes for the pulse port in the block, so I believe he must be making them two ways now. Either way I will find out when it arrives. I personally like them with an external pulse port. It gives you the option of rotating the carb to put the arms on the other side if needed. Plus you don't have any headaches of the gasket or silicon plugging the hole. Do you have a pic showing where you tapped your case for the nipple?
You'll have to let us know how your experiment works out.
Doug
#9
My Feedback: (98)
Join Date: Feb 2002
Location: The Villages, Florida NJ
Posts: 4,677
Likes: 0
Received 0 Likes
on
0 Posts
RE: MT-62
ORIGINAL: Super08
Do you have a pic showing where you tapped your case for the nipple?
Do you have a pic showing where you tapped your case for the nipple?