DA 50R All up weight

[Ialwayscrash]

Does anyone have the all up weight for Da 50 R including everything needed to run but a battery and switch harness. If you could include the type of muffler also.
Thanks

[JoeAirPort]

Engine w/ plug: 3 pounds exactly
ignition: 3.7 ounces
3" stand offs: 3.3 ounces
Slimline pitts :8.9 ounces
Slimline extra bracket and hardware: 2 ounces
Battery: 3 ounces
Switch: 0.6 ounces (Cermark/JR HD)
--------------------------------------------------------
4 pounds, 8.5 ounces (4.5 pounds).

You will save some weight if you go with a lighter/louder muffler. I think the minimum this engine can weigh with everything is 4 pounds. The battery at 3 ounces is very low, you'd really have to shave weight on the muffler type to get to 4 pounds flat.

[bodywerks]

The slimline Pitts is DEAD WEIGHT. Subtract 6.5 ouces from the above total by going with a stock muffler.

[JoeAirPort]

There are two drawbacks to the DA muffler: loud and ugly.

[YaKs are BeSt]

Who says being loud is a setback. I love hearing my plane scream by!!!!!!!

[Ialwayscrash]

Thanks for the quick replies

[Ramz]

	Quote: Originally Posted by YaKs are BeSt
	Who says being loud is a setback. I love hearing my plane scream by!!!!!!!

Tell that to the neighbours at my flying field...

[JeeUm]

Hate to sound like a broken record, but the JTEC pitts is lighter then the slimline and nice and quiet also.

[bodywerks]

If I'm going to add that kind of weight in an exhaust because I need it to be quiet, I'm going with a cannister. It may be heavier than even a slimline, but also way quieter and actually adds a couple hundred RPM, so it's an actual performance benefit, instead of dead weight.

[AHP]

	Quote: Originally Posted by JeeUm
	Hate to sound like a broken record, but the JTEC pitts is lighter then the slimline and nice and quiet also.

What's it weigh? I'd like to find a lighter wrap-around to replace my brickish Slimline.

[jtec/radiowave]

jtec wraparound pitts all up weight is 8.6oz with bolts for the standard. the large super quiet version is 10.oz and 95dB at 9 feet tested independently.

Al
JTEC/RADIOWAVE

[JoeAirPort]

	Quote: Originally Posted by jtec/radiowave
	jtec wraparound pitts all up weight is 8.6oz with bolts for the standard. the large super quiet version is 10.oz and 95dB at 9 feet tested independently. Al JTEC/RADIOWAVE

Sound like you super quiet one is about the same as the Slimline. The Slimline is 11 ounces with all brackets and 95 or 98 db at 9 feet.

[red_z06]

DA50 with slimline pitts measured on uncalibrated radio shack db meter at 103db at 9'.
I laid tape measure from fuse centerline to tip of the sensor.
3 different planes and setups all seem to be fairly close. 2nd meter was used and came it at 103db also.

Al:

Can you build your super quiet version with thinner walls? I don't care if it crumple when you crash.


MTW 75k canister: 9oz
MTW double bend header: 4.5oz
teflon coupler with 2 clamps: 1.5oz
------------------------------------
Total 15oz for canister setup for DA50
(Above excludes 0.5oz or so for canister mount with silicone bumpers)

[JoeAirPort]

	Quote: Originally Posted by red_z06
	DA50 with slimline pitts measured on uncalibrated radio shack db meter at 103db.

At what distance? I heard it was either 95 or 98, can't remember. Distance was 3 meters I believe. That's the first time I heard it was 103db.

[jtec/radiowave]

	Quote: Originally Posted by red_z06
	DA50 with slimline pitts measured on uncalibrated radio shack db meter at 103db at 9'. I laid tape measure from fuse centerline to tip of the sensor. 3 different planes and setups all seem to be fairly close. 2nd meter was used and came it at 103db also. Al: Can you build your super quiet version with thinner walls? I don't care if it crumple when you crash. MTW 75k canister: 9oz MTW double bend header: 4.5oz teflon coupler with 2 clamps: 1.5oz ------------------------------------ Total 15oz for canister setup for DA50 (Above excludes 0.5oz or so for canister mount with silicone bumpers)

Yeah we could. I'm not sure how much more weight we could knock off. We currently are using .049 wall on the can. the manafold is .125 mostly for strength when bolting it up. My guess would be only a couple of grams. Thinner walls will also make it very tinny sounding

I see your showing the canister system. our advantage is basically ease of installation. The advantage of cans is you may pick up some RPM if you have the room to install them

On our large version, it has at least half again the canister volume as the for mentioned brand. In fact the engine that they tested our muffler on had the for mentioned muffler on it prior to testing ours and it did not pass the sound requirements of there club which is 98db at 3 meters. The results sent back to me from the WRAMS club menbers (NY) were that the readings with our large can muffler was 95db at 9 feet(less than 3 meters) and 94 db at 9.8 feet. The WRAMS have a very strick sound policy.

Our design does not require additional support brackets

FYI. We were the ones to make the first stock muffler for the DA50 when it was being prototyped. DA was our landlord at the time and we were in the same building (at the old location)

Al
JTEC/RADIOWAVE